ValueError: DataFrame index must be unique for orient=’columns’

by

The error indicates that your dataframe index has non-unique (repeated) values. Since it appears you’re not using the index, you could create a new one with:

df.reset_index(inplace=True)

or

df.reset_index(drop=True, inplace=True)

if you want to remove the previous index.

Check this link as well.

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